+1 there's already well maintained extension https://github.com/fboulnois/pg_uuidv7 https://github.com/fboulnois/pg_uuidv7 It's slightly different from recomm

+1 there's already well maintained extension https://github.com/fboulnois/pg_uuidv7 https://github.com/fboulnois/pg_uuidv7 It's slightly different from recommendations by draft RFC version (there's no counter), but fully within spec requirements. From practical point there's no difference at all.